She expected him to ask for a scotch and was rather nonplussed when he asked her to mix him a martini and lemonade.她料想他会要一杯苏格兰威士忌，所以当他请她调一杯马提尼酒加柠檬水时，她有点不知所措。I was completely nonplussed by his reply.他的回答让我完全不知所措。She looked slightly nonplussed at first but composed herself quickly.她起初看上去有些不知所措，但很快就镇静了下来。Billy was completely nonplussed by Elliot's refusal.比利完全被埃利奥特的拒绝搞得不知所措。